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Contract Services and Advanced Technology Costs (Narrative) (Details) - USD ($) $ in Millions | 6 Months Ended | 12 Months Ended
--- | --- | ---
Jun. 30, 2017 | Sep. 30, 2017 | Sep. 30, 2016
Contract revenue current work | $ 16.2 |  |
Contract revenue past work | $ 8.1 |  |
2017 ORNL Contract [Member] | Scenario, Forecast [Member] |  |  |
Contract value |  | $ 25.0 |
Contract monthly revenue |  | 2.0 |
Contract milestone payments |  | $ 1.0 |
2016 ORNL Contract [Member] |  |  |
Contract monthly revenue |  |  | $ 2.7

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- Definition 2017 ORNL Contract value + References No definition available. + Details
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- Definition Contract milestone payments + References No definition available. + Details
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- Definition UT-Battelle contract monthly revenue + References No definition available. + Details
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- Definition UT-Battelle contract revenue past work + References No definition available. + Details
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- Details
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- Details
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- Details
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